Pump



Aug. 20, 1929.

P. w. COWLE I 1,725,568 I PUMP Filed April 30. 1928 Z7296 20 L Cl a E 28 A 1 ll l "I a V W J i/i 'H d 12 W30 m m /0 M a D 9% I III T I. fl E /2 E 77 W h. o f] f I HIH ATTORNEY.

Patented Aug. 20, 1929.

UNITED STATES PATENT OFFICE. I

PAUL W. COWLE, OF CHICAGO, ILLINOIS, ASSIGNOR TO CHICAGO PUMP COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PUMP.

Application filed April 30,

This invention relates to pumps, and more particularly to electric motor driven water pumps of the vertical type capable of use in pumping water from flood-ed basements or out of wells and other'receptacles. For the sake of economy, it has been found desirable to construct the pump unit in such manner that where desired it may be supported on a floor by legs, or it may be sustained in a well or other receptacle by a floor plate.

In the manufacture of the pump. unit, the legs and the floor plate are omitted from the structure until such time as the unit is to be assembled for the installation, and, at that time, the legs or floor plate, as the case may be, are assembled with the remainder of the parts to complete the unit. In order to readily assemble the floor plate with the remainder of the unit, and with the idea of economy in view, the floor plate has been made of novel form whereby it may be quickly secured to the remainder of the pump unit without disassembling the structural parts thereof.

The invention consists in the several novel features hereinafter fully set forth and claimed.

The invention'is clearly illustrated in the drawing accompanying this specification in which Figure 1 is a side elevation of an electric motor driven pump unit, and showing a simple embodiment of the present invention applied thereto;

Fig. 2 is a horizontal cross section taken on the line 2-2 of Fig. 1;

Fig. 3 is a detail vertical cross section taken on the line 3--3 of Fig. 2;

Fig. 4 is a detail vertical cross section taken on the line 4-4 of Fig. 2;

Fig. 5 is a view looking from below of the floor plate; and

Fig. 6 is a horizontal section taken on the line 6-6 of Fig. 1, and showing the two halves of the floor plate detached from each other.

Referring to said drawing, the reference character 10 designates an electric pump motor, here shown as mounted upon a tripod 11, to the lower end of which is secured a tubular housing 12, which extends down to the pump casing (not shown) and encloses the impeller shaft 13, which is connected by a suitable coupling to the motor shaft of the motor 10. A discharge pipe 12 leads up- 1928. Serial No. 273,784.

ward from the pump casing and is secured in the tripod 11.

An electric switch 15 is supported by the motor casing and has a switch lever which is connected to and operated by a float rod 16 that has a float (not shown) on its lower end which is raised and lowered by the water, thereby controlling the operation of the pump motor. The tripod is provided with bosses 17 for receiving the upper ends of legs (not shown) which are used when the pump unit 1s supported upon a floor or wall, such as the bottom of a well or the like.

In situations where it is desired to support the pump unit by the top of the well structure, or in cases where the pump unit cannot be supported from the bottom of the well, a floor plate 18 is provided which is adapted to rest upon the floor or top of the well structure and sustain the pump unit therefrom.

The floor plate comprises a circular plate 19 on the upper face of which, is a boss 20 cast integral therewith and containing a vertical hole 21 for the reception of the tubular housmg 12 and a hole 22 for the reception of the discharge pipe 12 The two side Walls of the boss 20 contain flat parallel parts 23 through which extends a bolt 24 having a nut on one end by means of wh ch the floor plate is clamped upon the housing 12 and discharge pipe 12 The floor plate may be provided with a slot 25 through which the float rod 16 extends, and said slot may be surrounded byan upstanding flange 26, if desired. Bolt holes 27 may be provided 1n the plate 19 for the reception of bolts or other fastening means for bolting the pump umt to the supporting structure.

Initially the floor plate is made in the form of a smgle casting and the holes 21 and 22 maybe reamed out to fit snugly upon the housmg 12 and discharge pipe )12. The plate 19 1s cast with two radial slots 28 which extend from the boss 22 to places adjacent the margin of the plate 19, as indicated at 29.

Between the ends 29 of the slots 28 and the margin of the plate 19, the ower side of the plate is formed with radial rooves 30, thereby leaving relatively thin metal parts between the ends of the slots 28 and the margin of the plate. The slots 28 are continued up along the'opposite end walls of the boss 20, and, if desired, may extend to the top of the boss, or one of said slots may termmate short of the top, as seen at 28 in Fig. 3, and

a groove similar to the groove 30 may be formed between the upper end of the slot and the upper edge of the boss so as to leave a relatively thin metallic portion between the upper end of the slot and upper edge of the boss.

With the above described arrangement of slots and relatively thin parts connecting the two halves of the floor plate, it is possible to crack the thin metallic portions, and thereby separate the floor plate into two halves, and this may be done by driving wedges into the slots and fracturing the metal at the thin places. The fractured edges are designated by the reference characters a and b and comprise irregular interfitting surfaces. Inasmuch as said fractured .faces match each other perfectly when the two halves are re assembled and bolted upon the housing 12 and discharge pipe 12, the two halves form, to all intents and purposes, a complete floor plate in which the fractured portions are not observed, particularly when the floor plate is painted over.

The two halves of the floor plate being assembled around the housing and discharge pipe with the matched broken edges in contact with each other, the bolt is inserted through the bolt holes in the flat parts of the boss and the nut tightened'upon the bolt, thereby bringing the matched broken edges into intimate contact and clamping the two halves of the boss tightly against the housing and discharge plpe. It will be understood that there is suflicient elasticity in the metal of the boss to permit the two halves.

thereof to be tightly clamped upon the housing and discharge pipe with the matched broken edges of the plate held in intimate contact.

I claim as new, and desire to secure by Let ters Patent:

1. In a pump unit having a vertical housing for an impeller shaft, a floor plate forming the supporting element of the pump unit and comprising two companion halves cast witha boss having a part surrounding said housing, the two halves having irregular interfitting edges located beyond the boss and disposed adjacent the margin of the plate, and fastening means exending through the boss and arranged to force said interfitting edges into intimate contact and to clamp the boss upon the housing.

2. In an electric motor driven pump unit having a tripod, a vertical housing for an impeller shaft, and a vertical discharge pipe,

both secured to and projecting down from said tripod, a floor plate forming the supporting element of the pumping unit and. comprising two companion halves cast with a boss surrounding said housing and discharge pipe, said boss having parallel side Walls extending between said housing and discharge pipe, and the two halves of said floor plate having irregular interfitting edges adjacent the margin of the plate, and a bolt extending through said parallel side Walls of the boss and arranged to force said interfitting edges into intimate contact throughout and to clamp said boss upon said housing and discharge pipe.

3. In an electric motor driven pump unit having a vertical housing for an impeller shaft, a floor plate forming the supporting element of the pump unit and comprising a plate formed with a boss cast integral therewith and arranged to surround said housing, said floor plate being formed with radial slots extending through said bossand through said plate and terminating at places adjacent the margin of the plate, there being grooves on the underside of the plate forming continuations of said slots and the plate being formed above said grooves with irregular interfitting edges adjacent the margin of the plate, and a bolt extending through said boss and arranged to hold said interfitting edges in intimate contact and to clamp the boss upon the housing.

PAUL W. COWLE. 

